Preheat oven to 375 F and grease a muffin tin. Whisk buttermilk, vegetable oil, eggs, sugar and lime juice to combine. In a separate bowl, stir together cornmeal, flour, lime zest, baking soda and salt. Add to buttermilk mixture and whisk until smooth (batter will be very fluid). Stir in the blueberries. Divide between 8 greased mini loaf pans and bake for 17 to 20 minutes, until top springs back when touched. Serve warm with Orange Butter.

Orange Butter:

1.

Beat soft butter with honey and orange zest. Chill until ready to serve.